Back in December, we heard that a special crossover event between The Witcher 3: Wild Hunt and Monster Hunter: World was coming our way. That event is now live on PlayStation 4 and Xbox One. If you choose to participate, you'll get a chance to play through a Monster Hunter: World quest as Geralt of Rivia, craft some unique The Witcher-themed gear, and then test your mettle in a limited-time high-level quest running between February 15th and March 1st. The event should be coming to PC at a later date.

Here's the official trailer:

And some additional details:

An otherworldly creature has arrived in the New World and we need a hunter with special abilities to help the Research Commission hunters solve the anomalies it has ushered in. Enter Geralt of Rivia, The Witcher.

As part of the Free Title Update (PS4 version 6.00 / Xbox One version 6.0.0.0), you’ll get to play as Geralt from The Witcher 3: Wild Hunt in a unique experience that brings out the best of both game series. We’ve even called upon the original voice actors for Geralt to play his part again in Monster Hunter: World!

The first part of this collaboration puts you in Geralt’s boots and gives you all-new mysteries to solve and gear to craft with the Special Assignment “Contract: Trouble in the Ancient Forest”. After you complete the assignment, the Geralt α full armor set will be available for crafting, as well as the Sword & Shield weapon Witcher’s Silver Sword for your Hunter. And for your Palico, the Nekker α full armor set and Cursed Staff α will show up in the Smithy’s list... but only after you've completed a very special bounty.

Once you’ve cleared this Special Assignment and crafted your shiny new gear, start prepping for the second part of this collaboration: an even tougher challenge with even more rewards! The limited time (Feb 15th – Mar 1st) Event Quest “Contract: Woodland Spirit” will be set for HR50+ hunters, but this time it’ll be open to multiplayer, so get your squad ready and take on this ancient threat. Rewards include the Ciri α full armor set and a matching set of Dual Blades. Good luck, hunters!